tubular lower control arms
My drag Demon must have been a wheel standing machine back in the day. The LCAs on it were spread apart and the rotating torsion bar transfer thingy was really loose and sloppy. I now have sand blasted 43 yrs of grit/gunk from another set and welded on the plates then painted them. Had the pivots plated and put in new bushings. Nice and tight now.
I may go with tubular uppers if the car launches OK, but would not use tubular lowers. Just me.